As we all know, water is essential in our daily life. We drink water every day, we use water to wash things and cook food, we also use water to make machines. People can't live without water.
Though about 75% of the earth is covered with water, only 3% of it is fresh water. So we must save water by having a shower instead of a bath. We can save water by fixing dripping taps immediately and we can also save water by not washing under a running tap.